{ "contractName": "ERC165", "abi": [ { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "constant": true, "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"author\":\"Matt Condon (@shrugs)\",\"details\":\"Implements ERC165 using a lookup table.\",\"methods\":{\"constructor\":{\"details\":\"A contract implementing SupportsInterfaceWithLookup implement ERC165 itself\"},\"supportsInterface(bytes4)\":{\"details\":\"implement supportsInterface(bytes4) using a lookup table\"}},\"title\":\"ERC165\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"openzeppelin-solidity/contracts/introspection/ERC165.sol\":\"ERC165\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"openzeppelin-solidity/contracts/introspection/ERC165.sol\":{\"keccak256\":\"0x9da23588f58d0fa67097984e151bdaa6aa69c5e192bae17b44a90b0cfc194736\",\"urls\":[\"bzz-raw://5e88c7dbb4d1e6d3f133112b9994491b8531f5d9103cf41becd1c267d2cd67af\",\"dweb:/ipfs/QmNuSmDBgv616hXRshbHx48ufdZoSrcFHpwqP4iPg2ac4X\"]},\"openzeppelin-solidity/contracts/introspection/IERC165.sol\":{\"keccak256\":\"0xbbb6159006ae3639daea09f7d63987816d6cf3a99f52af919363e025d3abf3b8\",\"urls\":[\"bzz-raw://35e7d742ee71461779df12a0ab1ad4701144d98eb6401182838c8daf40b008dd\",\"dweb:/ipfs/QmY4t7pxcX2cfk6VsGJWZLBgoKMpRctY8X1HPxykLjptSi\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity ^0.5.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @title ERC165\n * @author Matt Condon (@shrugs)\n * @dev Implements ERC165 using a lookup table.\n */\ncontract ERC165 is IERC165 {\n bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\n /**\n * 0x01ffc9a7 ===\n * bytes4(keccak256('supportsInterface(bytes4)'))\n */\n\n /**\n * @dev a mapping of interface id to whether or not it's supported\n */\n mapping(bytes4 => bool) private _supportedInterfaces;\n\n /**\n * @dev A contract implementing SupportsInterfaceWithLookup\n * implement ERC165 itself\n */\n constructor () internal {\n _registerInterface(_INTERFACE_ID_ERC165);\n }\n\n /**\n * @dev implement supportsInterface(bytes4) using a lookup table\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool) {\n return _supportedInterfaces[interfaceId];\n }\n\n /**\n * @dev internal method for registering an interface\n */\n function _registerInterface(bytes4 interfaceId) internal {\n require(interfaceId != 0xffffffff);\n _supportedInterfaces[interfaceId] = true;\n }\n}\n", "sourcePath": "openzeppelin-solidity/contracts/introspection/ERC165.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/introspection/ERC165.sol", "exportedSymbols": { "ERC165": [ 12051 ] }, "id": 12052, "nodeType": "SourceUnit", "nodes": [ { "id": 12002, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:48" }, { "absolutePath": "openzeppelin-solidity/contracts/introspection/IERC165.sol", "file": "./IERC165.sol", "id": 12003, "nodeType": "ImportDirective", "scope": 12052, "sourceUnit": 12062, "src": "25:23:48", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 12004, "name": "IERC165", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12061, "src": "175:7:48", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC165_$12061", "typeString": "contract IERC165" 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"lValueRequested": false, "nodeType": "Literal", "src": "236:10:48", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_33540519_by_1", "typeString": "int_const 33540519" }, "value": "0x01ffc9a7" }, "visibility": "private" }, { "constant": false, "id": 12012, "name": "_supportedInterfaces", "nodeType": "VariableDeclaration", "scope": 12051, "src": "436:52:48", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes4_$_t_bool_$", "typeString": "mapping(bytes4 => bool)" }, "typeName": { "id": 12011, "keyType": { "id": 12009, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "444:6:48", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "Mapping", "src": "436:23:48", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes4_$_t_bool_$", "typeString": "mapping(bytes4 => bool)" }, "valueType": { "id": 12010, "name": "bool", "nodeType": "ElementaryTypeName", 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